If it rains, I won’t go to the park.

If I study today, I’ll go to the party tonight.

If I won the lottery, I would buy a big house.

If I met the Queen of England, I would say hello.

If we had taken a taxi, we wouldn’t have missed the plane.

She wouldn’t have been tired if she had gone to bed earlier.

If you had caught that plane, you would be dead now.

You would be dead now if you had caught that plane.